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feat: add COMPOSER_MAX_PARALLEL_PROCESSES #12356

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Merged
merged 2 commits into from
Apr 2, 2025
Merged

feat: add COMPOSER_MAX_PARALLEL_PROCESSES #12356

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784a7d0
Introduce COMPOSER_MAX_PARALLEL_PROCESSES
ictbeheer Mar 28, 2025
125eef9
Reduce duplication
Seldaek Apr 2, 2025
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5 changes: 5 additions & 0 deletions doc/03-cli.md
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Original file line number Diff line number Diff line change
Expand Up @@ -1271,6 +1271,11 @@ defaults to 12 and must be between 1 and 50. If your proxy has issues with
concurrency maybe you want to lower this. Increasing it should generally not result
in performance gains.

### COMPOSER_MAX_PARALLEL_PROCESSES

Set to an an integer to configure how many processes can be executed in parallel.
This defaults to 10 and must be between 1 an 50.

### COMPOSER_IPRESOLVE

Set to `4` or `6` to force IPv4 or IPv6 DNS resolution. This only works when the
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9 changes: 8 additions & 1 deletion src/Composer/Util/ProcessExecutor.php
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Expand Up @@ -78,6 +78,9 @@ class ProcessExecutor
public function __construct(?IOInterface $io = null)
{
$this->io = $io;
if (is_numeric($maxJobs = Platform::getEnv('COMPOSER_MAX_PARALLEL_PROCESSES'))) {
$this->maxJobs = max(1, min(50, (int) $maxJobs));
}
}

/**
Expand Down Expand Up @@ -350,7 +353,11 @@ public function setMaxJobs(int $maxJobs): void

public function resetMaxJobs(): void
{
$this->maxJobs = 10;
if (is_numeric($maxJobs = Platform::getEnv('COMPOSER_MAX_PARALLEL_PROCESSES'))) {
$this->maxJobs = max(1, min(50, (int) $maxJobs));
} else {
$this->maxJobs = 10;
}
}

/**
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